Wind-US User's Guide - Keyword Reference, LAX DAMPING

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LAX DAMPING - Dissipation parameters for explicit differencing scheme

Unstructured Grids

LAX [DAMPING] [EXPLICIT dmp1] [IMPLICIT dmp2] [zone_selector]

This keyword may be used to specify scalar dissipation parameters for the explicit differencing scheme for unstructured grids. The value dmp1 is the flux dissipation parameter, and dmp2 is the Jacobian dissipation parameter. The flux dissipation parameter only applies to the Lax (Rusanov) scheme with Hypercomp pre-conditioning, while the Jacobian dissipation parameter applies to all three schemes (i.e., Rusanov, Roe, and HLLE) with or without Hypercomp pre-conditioning.

The default values are 0.25 and 1.5, respectively.

See Also: DEBUG 11, DEBUG 51, PRECOND, RHS